Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Ecology and Environment Organisms and Populations
The hairs on the skin erect when temperature falls. Give reason:
1
The thickened fur coat act as an insulator.
2
It is a behavioral change.
3
It is due to subcutaneous fat.
4
More than one of the above
5
None of the above